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Buying

Demand-Side Platform (DSP)

A demand-side platform is software used by advertisers, agencies or buying teams to evaluate, bid on, purchase and optimize digital advertising inventory across programmatic supply sources.

Why it matters

A DSP centralizes buying decisions across many inventory sources while applying audience, budget, bidding, frequency, creative and measurement controls.

How it works

  1. Campaign objectives, budgets and targeting rules are configured.
  2. Incoming opportunities are evaluated against campaign eligibility.
  3. The DSP calculates a bid or chooses not to bid.
  4. Delivery and performance data inform pacing and optimization.

Frequently asked questions

Who normally uses a DSP?

Advertisers, agencies, trading teams and managed-service buyers commonly use DSP technology.

Does a DSP own publisher inventory?

Usually no. A DSP represents buying demand and accesses inventory through exchanges, SSPs, direct integrations or deal paths.

Related programmatic terms